Higgins of County Down, Ireland

I'm trying to locate information about Daniel Higgins b: 24 JUN 1814 in Mourne Parish, Down County, Ireland, and died 16 APR 1878 in New London, CT, USA.He was married to Bridget (Unknown) who was b abt: 1812 in Ireland, and died 12 Feb 1882 in New London, CT, USA.